I have a Media server and a media caster which can control displaying content on specific screen.

I have several page on my simple Web site build by vb .net, only one form or chart in one page. And I have a Control Page to change a DB Column named PageIndex by Buttons. Then I wrote a page choosing function Call by an Timer every 5 seconds :

Private Sub PageChoose()
    Dim strSQL As String = "SELECT [PageIndex]" &
        " FROM [dbo].[Table1] " &
        " WHERE Series = '1'"
    Dim dt As DataTable = commonUtil.QueryToDataTable(strSQL)
    Dim currentPage As Integer = dt(0)(0)
    If currentPage <> commonUtil.exPage Then

        Select Case currentPage
            Case 0
                Response.Redirect("/info.aspx")

            Case 1
                Response.Redirect("/charts/linebasic/chart1.aspx")
        End Select

        commonUtil.exPage = currentPage

    End If

End Sub

What I want is when I made the media server to load charts page and cast it to the screen, I need it enable the fullscreen mode without click the button in the menu:

That is to say : I want this when I changed the page to chart:

instead of this :